import re
from urllib.request import urlopen
content = urlopen("http://news.163.com/photoview/00AN0001/2305474.html#p=EV8UHLC100AN0001NOS").read().decode('gbk')
# print(content)
obj = re.compile(r'.*?src="(?P<img>.*?)"',re.S)
it = obj.finditer(content)
for el in it:
    print(el.group("img"))